All Indo-European Political Establishments Raised up in A.D. Anno Domini -Why?

Where did the Indo-European Originally live?

The Proto-Indo-Europeans likely lived during the late Neolithic, or roughly the 4th millennium BC. Mainstream scholarship places them in the Pontic–Caspian steppe zone in Eastern Europe (present day Ukraine and southern Russia) //   The beginnings of Indo-European expansion took place around 4000 BC (see Map 2, below),